Transition characteristics of combustion modes for flame spread in solid fuel tube
Transition characteristics of combustion modes for flame spread in solid fuel tube
复制标题
固体燃料管内火焰蔓延燃烧模式的转变特性
DOI:
10.1016/j.combustflame.2012.03.001
复制
发表时间:
2012
影响因子:
4.4
通讯作者:
Tsuneyoshi Matsuoka
中科院分区:
文献类型:
--
作者:
菅野陽将;黒田一幸;Mizuho Sato;Naotaka Izuo;佐藤瑞穂;Mizuho Sato;佐藤瑞穂;佐藤瑞穂;佐藤瑞穂;佐藤瑞穂;浅井 雅;浅井 雅;浅井 雅;浅井 雅;浅井 雅;浅井 雅;Tsuneyoshi Matsuoka
This paper provides a new concept based on the Damköhler number (Da) to describe the complete transition behavior found in a flame spread in a solid combustible tube. Through a series of experiments performed with various diameters of the tube, ambient pressure, and oxidizer velocity within a wide range, three combustion modes are observed for the flame spread in a solid fuel tube namely combustion dominated by heat transfer (mode 1), by chemical kinetics (mode 2), and slow combustion sustained under very high blowing conditions (so-called “stabilized combustion”: mode 3). Previous studies on the flame spread in tubes have shown that each transition, from mode 1 to mode 2 (transition 1–2) and from mode 2 to mode 3 (transition 2–3), is characterized by an equivalent velocity and by a friction velocity respectively. Meanwhile, for a flame spread on a fuel plate, it is widely known that both transitions are summarized by the Da. To achieve a comprehensive understanding of the transition characteristics of the combustion modes for the flame spread in the tube, the flame-spread rates under various conditions are experimentally investigated to elucidate the parameters that determine both transitions. First, the authors introduce a laminar friction velocity for the laminar flow region and revealed that transition 2–3 is determined by the laminar and turbulent friction velocity for laminar flow and turbulent flow regime respectively. The correlation between the Da and the friction velocity was experimentally obtained to show that transition 2–3 is consequently determined by the Da. This finding suggests that transition 2–3 corresponds to a blow-off limit that is observed for flame spread on a fuel plate. Second, the same correlation between the non-dimensional flame-spread rate and the Da is obtained, and it clearly showed that the transition 1–2 was determined by the Da. In conclusion, both transition phenomena are physically identical to those observed for on-plate flame spread, except the transition 2–3 occurs instead of the blow-off.
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DOI:
--
发表时间:
2010
期刊:
影响因子:
--
作者:
菅野陽将;黒田一幸;Mizuho Sato;Naotaka Izuo;佐藤瑞穂;Mizuho Sato;佐藤瑞穂;佐藤瑞穂;佐藤瑞穂;佐藤瑞穂;浅井 雅;浅井 雅;浅井 雅;浅井 雅;浅井 雅;浅井 雅;Tsuneyoshi Matsuoka;松岡常吉;松岡常吉;Tsuneyoshi Matsuoka;Tsuneyoshi Matsuoka
通讯作者:
Tsuneyoshi Matsuoka
DOI:
10.1288/00005537-199407000-00018
发表时间:
1994
期刊:
The Laryngoscope
影响因子:
--
作者:
Gerald L. Wolf;George W. Sidebotham;Jeffrey B. Stern
通讯作者:
Jeffrey B. Stern
影响因子:
4.4
作者:
George W. Sidebotham;S. Olson
通讯作者:
S. Olson
影响因子:
4.4
作者:
J. Tizón;J. Salvá;A. Liñán
通讯作者:
A. Liñán
影响因子:
1.9
作者:
Chiun
通讯作者:
Chiun